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Stellar Migrator for Exchange

stellarinfo.com

Free trial Windows
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Spec score 7.6 #15 of 25 in Email Migration Software

What it is

Stellar Migrator for Exchange moves mailboxes among Exchange Server and Microsoft 365 environments, including transfers between Microsoft 365 tenants. It supports primary, shared, and archive mailboxes as well as public folders, and can run cutover, staged, or hybrid migrations all at once or in batches. Delta migration transfers new or changed data after an initial move. Up to 10 mailboxes and their items can be migrated simultaneously. Users can match mailboxes automatically or map them manually, including with a CSV file, select folders such as email, contacts, calendars, tasks, notes, and journals, and filter mail by date range. Failed or incomplete migrations can be rerun, with automatic retries set from 1 to 5 attempts. It runs on Windows and requires at least 8 GB of memory. The free trial covers 2 mailboxes and includes all migration capabilities; Mailbox Pricing is $250, paid once, billed $10 Per Mailbox, with quantity selected on the page and one license per source mailbox.

Spec sheet

Purpose
The software migrates mailboxes between Exchange Server and Microsoft 365 without complex PowerShell scripting.Read 7 Oct 2026 · stellarinfo.com
Intended users
The maker describes it for organizations moving to Microsoft 365, consolidating Exchange environments, and migrating tenants during restructurings, mergers, or acquisitions.Read 7 Oct 2026 · stellarinfo.com
Support
The maker offers free support during migration and says its technical team can guide customers through preparation and migration.Read 7 Oct 2026 · stellarinfo.com
Headquarters
Houston, Texas, United StatesRead 28 Sep 2026 · stellarinfo.com
Founded
1993Read 28 Sep 2026 · stellarinfo.com
Hosted Exchange
The product can migrate hosted Exchange mailboxes to Microsoft 365 using an administrator account or individual user credentials.Read 7 Oct 2026 · stellarinfo.com
Incremental migration
Delta migration transfers new or modified data after the initial migration.Read 7 Oct 2026 · stellarinfo.com
Mailbox concurrency
The software can migrate up to 10 mailboxes and their items simultaneously.Read 7 Oct 2026 · stellarinfo.com
Mailbox mapping
It offers automatic mailbox matching and manual mapping, including use of a mapped CSV file.Read 7 Oct 2026 · stellarinfo.com
Mailbox types
It supports primary, shared, and archive mailboxes, as well as public folders.Read 7 Oct 2026 · stellarinfo.com
Migration methods
The product supports cutover, staged, and hybrid migrations, with migrations run all at once or in batches.Read 7 Oct 2026 · stellarinfo.com
Migration routes
Supported routes include Exchange Server to Exchange Server, Exchange Server to Microsoft 365, Microsoft 365 to Exchange Server, and Microsoft 365 tenant to tenant.Read 7 Oct 2026 · stellarinfo.com
Retry support
Failed or incomplete migrations can be rerun, with automatic retry attempts configurable from 1 to 5.Read 7 Oct 2026 · stellarinfo.com
Security and data handling
The maker says data is copied directly from source to target and does not impact source server data.Read 7 Oct 2026 · stellarinfo.com
Selective migration
Users can select folder types such as email, contacts, calendars, tasks, notes, and journals, and filter mail items by date range.Read 7 Oct 2026 · stellarinfo.com
System requirements
The product requires 64-bit Windows 11, 10, 8.1, or 8, or Windows Server 2022, 2019, 2016, or 2012, with at least 8 GB of memory.Read 7 Oct 2026 · stellarinfo.com

Plans and prices

Free Trial Free 2 mailboxes · no credit card required · all migration capabilities available Read 7 Oct 2026 · stellarinfo.com
Mailbox Pricing $250, paid once $10 Per Mailbox Mailbox quantity selected on page; one license per source mailbox Read 7 Oct 2026 · stellarinfo.com

Every Stellar Migrator for Exchange plan and price →

Strong points and limits

Strong points

  • Supports four Exchange and Microsoft 365 migration routes.
  • Handles shared, archive, and public-folder data.
  • Offers batch, staged, and hybrid migrations.
  • Trial includes all capabilities for 2 mailboxes.
  • Free migration support is offered.

Limits

  • Windows only; requires at least 8 GB of memory.
  • Trial is limited to 2 mailboxes.
  • Mailbox Pricing is $250, paid once.
  • No Google Workspace or IMAP support.

Who it suits

It suits organizations moving to Microsoft 365, consolidating Exchange environments, or migrating tenants during restructurings, mergers, or acquisitions. Windows is required.

Verdict

Stellar Migrator covers several Exchange and Microsoft 365 migration scenarios, with controls for selecting data and rerunning failed work. Check the Windows requirements and the one-license-per-source-mailbox pricing before planning a move.

Where Specifiction places it

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